Auto diagnostic tool



FIG. 1 is a front elevational view of an auto diagnostic tool showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines in the drawings illustrate portions of the auto diagnostic tool which form no part of the claimed design. The diagonal lines in the drawings represent reflective surfaces. 

CLAIM The ornamental design for an auto diagnostic tool, as shown and described. 